Final answer:
Dwight is reading 'Harry Potter and the Half-Blood Prince' to Pam and Jim at his farm.
Step-by-step explanation:
In the scene you are referring to, Dwight is reading Harry Potter and the Half-Blood Prince to Pam and Jim at his farm. This is the sixth book in the Harry Potter series, written by J.K. Rowling. In this book, the trio faces various challenges and mysteries at Hogwarts School of Witchcraft and Wizardry.